Sharp JW-20CM User Manual page 152

(Error code)
80 40
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※ You need to select the "output error code for a slave station connection condition" at the master
9
station parameter addresses 007750 to 007757
the slave station with the lowest station number will be displayed.
Remarks
• Error codes "23" and "2A
• To check the communication cable, remove both connectors and short the connector terminals
at one end. Then measure the conductivity using a tester.
• Check the parameter and switch settings for all stations. If the settings are correct, replace
the JW-20CM or JW-20RS.
LED name Error
code
20 10 8 4 2 1
(HEX)
ROM error, upper CPU
○ ○ ○ ○ ○ ● 01
(H)
○ ○ ○ ○ ● ○ RAM error, upper CPU
02
(H)
○ ○ ○ ○ ● ● 2 port RAM error against PC, upper CPU
03
(H)
2 port RAM error against communication CPU, upper CPU
○ ○ ○ ● ○ ○
04
(H)
○ ● ○ ○ ○ ● ROM error, communication CPU
11
(H)
○ ○ ○ ● ○ RAM error, communication CPU
●
12
(H)
Communication LSI error, communication CPU
○ ● ● ○ ○ ○ 18
(H)
No response, communication CPU
○ ● ● ● ● ●
1F
(H)
More than one token detected
● ○ ○ ○ ○
○ 20
(H)
Doubled address detected
● ○ ○ ○ ○ ●
21
(H)
Fault of sending section
● ○ ○ ○ ● ○
22
(H)
Token does not return within the rated interval
● ○ ○ ○ ● ●
23
(H)
Over flow of receiving buffer.
● ○ ● ○ ● ○
2A
(H)
Occurs when the upper CPU processing is delayed.
Flame length error
● ○ ● ○ ● ●
2B
(H)
Media error
● ○ ● ● ○ ○
2C
(H)
EEPROM error
● ● ○ ○ ○ ○
30
(H)
BCC error
● ● ● ● ● ○
BE
(H)
Parameter setting error
● ● ● ● ●
●
BF
(H)
Communication error
○ ○ ○ ○ ○ ●
※
C1
(H)
• After converting into octal, the lower two digits
to to
represent the slave station number of the current
● ● ● ● ●
●
※
FF error. (Ex. C1
(H)
" may occur when applying power. This is not an error.
(H)
Cause
• Occurs because of a media execution
error or noise from outside.
= 301 = slave station 01)
(H) (8)
. If more than one slave station has an error,
(8)
9 54
·
● : ON, ○ : OFF
Measure
Replace the JW-20CM
• Check the communica-
tion cable
• Check for doubled allocation
of slave station number
• Replace the JW-20CM
Check the parameter
setting, switch
Replace the JW-20CM
Check the communication cable
Check the communication
cable
Check the communication cable
Replace the JW-20CM
Check the parameter contents
Check the communication
cable and slave module